Ford C-MAX child lock malfunction - service req

Try pressing the window/child lock button on the drivers door arm rest a couple of times. If spraying WD40 , rather than hinges , spray into lock assemblies .Could also check the wiring where it enters into door frame for breaks .

https://www.youtube.com/watch?v=D6ASFVY9BC4

Thank you for the suggestion. As shown in youtube link, i did press child lock button couple of times. But, that is only a temporary fix to start car moving. Error keeps flashing on display panel.
I will try WD40 on the switches. Hope it will not do any harm to electric things.

Does your car have anti hijacking / autolock setting and if so is it enabled ? Check owners manual . Tried reprogramming the key remote ? Some models had a rear window lock button that could be pushed accidently . You said you checked the fuse , from what I can see there are multiple fuses covering central locking not the one .



There also was a TSB ,

02/10/14 Water ingress into the driver door module (DDM) or passenger door module (PDM); Warning message displayed in the instrument cluster
47/2014
Should a customer express concern about the warning message displayed in the instrument cluster or that the front speaker is without function, the probable cause is water ingress. The water enters behind the exterior mirror cover(s) through an inproper sealing of the door wiring harness, causing a short circuit in the driver door module (DDM) or passenger door module (PDM), and sometimes disables the front door speaker(s).
This should be rectified by sealing the door wiring harness, checking / renewing the DDM / PDM and repairing the damaged electrical connector(s).
For markets where FordEtis IDS is used, refer to WB 45/2009 for the policy on using FordEtis IDS for warranty repairs. If FordEtis IDS is used to diagnose a customer's concern(s), select the appropriate customer symptom(s), follow any diagnostic, repair and post repair procedures presented, and ensure the completed diagnostic session file is transmitted to Ford. Failure to follow this process may affect any associated warranty claim submission. FordEtis IDS is not available, rectify this concern by following the attached service repair instruction.
For markets where FordEtis IDS is not available, rectify this concern by following the attached service repair instruction.
Labor Times published in this TSB are available from 06.10.2014 onwards. Please refresh your Labor Master file at that day to receive the new data in your Dealer Management System. Please contact your internal system administrator.

See if this applies to your car ,

Ford C-MAX mk2 (2010 – 2015) – fuse box diagram (EU versrion)
Year of production: 2010, 2011, 2012, 2013, 2014, 2015

Engine compartment fuse box
Ford C-MAX (2015) - fuse box - engine compartment
Ford C-MAX (2010) – fuse box – engine compartment
Fuse Ampere rating [A] Circuits protected
7 40 Anti-lock Braking System pump
8 30 Anti-lock Braking System valve
9 20 Headlamp washer
10 40 Heater blower
11 30 Voltage quality module
12 30 Engine Control Relay
13 30 Starter relay
14 40 Heated windshield (right-hand side)
15 25 Intercooler Fan – 1.0L EcoBoost
16 40 Heated windshield (left-hand side)
17 20 Fuel operated heater
18 20 Windshield wipers
19 5 Anti-lock Braking System, electronic stability program module
20 15 Horn
21 5 Brake lamp switch
22 15 Battery monitoring system
23 5 Relay coils, lighting control switch module
24 20 Rear power outlet
25 10 Power exterior mirrors
26 15 Powertrain control module
27 15 Air conditioning clutch
28 — Not used
29 25 Heated rear window
30 5 Powertrain control module
31 — Not used
32 10 Exhaust gas recirculation valve, swirl control valves, heated exhaust gas oxygen sensor (engine management), electronic fan control module relay (coil), run on water pump module – 1.0L EcoBoost
33 10 Ignition Coils
34 10 Injectors
35 5 Intercooler relay coil
15 Filter heater (diesel engine)
36 10 Powertrain control module
37 — Not used
38 15 Powertrain control module, transmission control module
39 5 Headlamp control module
40 5 Electric power assisted steering
41 20 Body Control Module
42 15 Rear window wiper
43 15 Headlamp leveling
44 — Not used
45 10 Heated washer jets
46 25 Power windows (front)
47 7,5 Heated exterior mirrors
48 15 Vapourizer
Passenger compartment fuse box
Ford C-MAX (2015) - fuse box - passenger compartment
Ford C-MAX (2010) – fuse box – passenger compartment
Fuse Ampere rating [A] Circuits protected
56 20 Fuel pump supply
57 — Not used
58 — Not used
59 5 Passive anti-theft system supply
60 10 Interior lamp, driver’s door switch pack, glove box
61 20 Cigar lighter, second row power point
62 5 Rain sensor module, auto-dimming mirror
63 — Not used
64 — Not used
65 10 Liftgate release
66 20 Driver’s door lock, double locking
67 7,5 Information and entertainment display
68 15 Steering column lock
69 5 Instrument cluster
70 20 Central locking
71 10 Air conditioning
72 7,5 Steering wheel control module
73 7,5 Alarm, on-board diagnostics II
74 15 High beam
75 15 Front fog lamps
76 10 Reversing lamp
77 20 Washer pump
78 5 Ignition switch or start button
79 15 Voice control module, radio, navigation system, DVD player, CD changer, door lock button
80 — Not used
81 5 Interior motion sensor, radio frequency receiver, sun blinds
82 20 Washer pump ground
83 20 Central locking ground
84 20 Driver’s door lock and double locking ground
85 7,5 Radio, navigation system, passenger airbag deactivation switch, heated front seats switch, parking heater, manual air conditioning heater module
86 10 Restraint system
87 — Not used
88 — Not used
89 — Not used


Load compartment fuse box
Ford C-MAX (2015) - fuse box - load compartment
Ford C-MAX (2010) – fuse box – load compartment
Fuse Ampere rating [A] Circuits protected
1 — Not used
2 10 Keyless vehicle module
3 5 Keyless vehicle door handles
4 25 Door module (left-hand front) (power windows, central locking, power folding exterior mirror, heated exterior mirror)
5 25 Door module (right-hand front) (power windows, central locking, power folding exterior mirror, heated exterior mirror)
6 25 Door module (left-hand rear) (power windows)
7 25 Door module (right-hand rear) (power windows)
8 10 Security Horn
9 25 Power driver’s seat
10 — Not used
11 — Not used
12 10 Air conditioning module
13 5 Instrument cluster module
14 7,5 Information and entertainment display, GPS module (with start-stop module)
15 15 Audio unit, audio unit control panel module
16 — Not used
17 — Not used
18 — Not used
19 — Not used
20 — Not used
21 — Not used
22 — Not used
23 — Not used
24 30 Power inverter
25 25 Power operated tailgate
26 40 Accessories, trailer module
27 — Not used
28 — Not used
29 5 Blind spot monitor, lane keeping aid, active city stop, rear view camera (without start-stop module)
5 Extended ignition signal (with start-stop module)
30 5 Park aid Module
31 — Not used
32 5 Power inverter
33 — Not used
34 15 Heated driver’s seat
35 15 Heated front passenger seat
36 — Not used
37 20 Sun blind system
38 — Not used
39 — Not used
40 — Not used
41 — Not used
42 — Not used
43 — Not used
44 — Not used
45 — Not used
46 5 Blind spot monitor, lane keeping aid, rear view camera (with start-stop module)

Thank you 'whittingehame'.
These fuse info definitely applies to my car and I did check Fuse 6 and Fuse 7 of Load compartment. They are all good. No issues with fuse.

Seems issue water ingress as you suggested might have damaged switch on rear door. I have to find a way to swap power window switches and find out if it is an issue with switch.